Claude Code for Pulumi Policy Pack Workflow Guide

Infrastructure as Code (IaC) has revolutionized how teams manage cloud resources, but with great power comes great responsibility. Ensuring compliance, security, and best practices across your infrastructure becomes increasingly challenging as your deployments scale. Pulumi Policy Packs offer a powerful solution by letting you enforce rules programmatically before resources are deployed. When combined with Claude Code, you can automate the entire policy lifecycle—from creation to enforcement—making governance seamless and developer-friendly.

This guide walks you through building an effective Pulumi Policy Pack workflow using Claude Code, with practical examples you can adapt to your infrastructure needs.

Understanding Pulumi Policy Packs

Pulumi Policy Packs enable you to write policies in TypeScript, JavaScript, or Python that validate infrastructure before it’s deployed. Unlike traditional policy-as-code solutions that run after deployment, Pulumi policies intercept the deployment process, preventing non-compliant resources from ever being created.

A policy pack consists of one or more policy rules that evaluate stack resources. Each policy can either warn about issues or block deployment entirely. This proactive approach catches problems early—when they’re easiest to fix.

Key Components of a Policy Pack

Every Pulumi Policy Pack contains these essential elements:

Policy Manager - The entry point that registers your policies
Individual Policies - Rules that evaluate specific resource types or conditions
Enforcement Level - Determines whether violations are warnings or hard failures

Setting Up Your Development Environment

Before creating policies with Claude Code, ensure you have the necessary tools installed:

# Install Pulumi CLI
curl -fsSL https://get.pulumi.com | sh

# Initialize a new TypeScript project
mkdir pulumi-policy-guide && cd pulumi-policy-guide
pulumi new typescript

# Install Policy Pack dependencies
npm install @pulumi/policy @pulumi/policy题型

Creating Your First Policy with Claude Code

Claude Code can help you generate policy code efficiently. Here’s a practical example of a policy that ensures all S3 buckets have encryption enabled:

import * as pulumi from "@pulumi/pulumi";
import * as aws from "@pulumi/aws";

// Policy: Enforce S3 Bucket Encryption
const s3EncryptionPolicy: pulumi.policy.Policy = {
    name: "s3-bucket-encryption",
    description: "Ensures all S3 buckets have encryption enabled",
    enforcementLevel: "mandatory",
    validateResource: pulumi.policy.validateResourceOfType(
        aws.s3.Bucket,
        (bucket, _, reportViolation) => {
            if (!bucket.serverSideEncryptionConfiguration) {
                reportViolation(
                    "S3 bucket must have server-side encryption enabled. " +
                    "Add serverSideEncryptionConfiguration to enable AES-256 or AWS-KMS encryption."
                );
            }
        }
    ),
};

export const policyPack = new pulumi.policy.PolicyPack("security-policies", {
    policies: [s3EncryptionPolicy],
});

Automating Policy Creation Workflow

One of Claude Code’s strengths is helping you generate consistent, well-structured policy code. Here’s a workflow pattern for creating policies at scale:

Step 1: Define Policy Requirements

Before writing code, document what each policy should enforce. For example:

Resource naming conventions - Ensure consistent naming across environments
Tag enforcement - Require cost center, environment, and owner tags
Security baseline - Block public access, require encryption, enforce VPC settings
Cost optimization - Warn on oversized instances or unused resources

Step 2: Generate Policy Templates

Use Claude Code to generate policy templates based on your requirements:

// Claude Code prompt: "Create a policy that enforces resource tagging"
const taggingPolicy: pulumi.policy.Policy = {
    name: "required-tags",
    description: "Ensures resources have required tags",
    enforcementLevel: "mandatory",
    validateResource: (args, reportViolation) => {
        const requiredTags = ["Environment", "Owner", "CostCenter"];
        const resourceTags = args.props.tags || {};
        
        const missingTags = requiredTags.filter(
            tag => !resourceTags[tag]
        );
        
        if (missingTags.length > 0) {
            reportViolation(
                `Resource missing required tags: ${missingTags.join(", ")}`
            );
        }
    },
};

Step 3: Organize Policies by Category

For maintainability, organize policies into logical groups:

policy-pack/
├── index.ts                 # Main entry point
├── policies/
│   ├── security/
│   │   ├── encryption.ts
│   │   ├── access-controls.ts
│   │   └── network-security.ts
│   ├── compliance/
│   │   ├── tagging.ts
│   │   └── naming-conventions.ts
│   └── cost/
│       ├── instance-sizing.ts
│       └── idle-resources.ts
└── Pulumi.yaml

Integrating Policies into CI/CD

A robust policy workflow includes CI/CD integration. Here’s how to enforce policies in your deployment pipeline:

# .github/workflows/policy-check.yml
name: Pulumi Policy Check

on: [push, pull_request]

jobs:
  policy:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      
      - name: Install Pulumi
        uses: pulumi/action-install-pulumi-cli@v2
      
      - name: Install dependencies
        run: npm ci
      
      - name: Preview and Apply Policies
        run: |
          pulumi preview --policy-pack ./policy-pack
        env:
          PULUMI_ACCESS_TOKEN: ${{ secrets.PULUMI_ACCESS_TOKEN }}

Best Practices for Policy Development

Follow these guidelines for maintainable and effective policies:

Start with warnings, then enforce. Deploy new policies with enforcementLevel: "advisory" initially. This lets teams adapt gradually without blocking deployments. Once compliance improves, upgrade to mandatory.

Write clear violation messages. Your reportViolation messages should tell developers exactly what’s wrong and how to fix it:

reportViolation(
    `EC2 instance ${instance.id} is using ${instance.instanceType} ` +
    `which is not in the approved list. ` +
    `Use t3.micro, t3.small, or t3.medium for general workloads.`
);

Test policies thoroughly. Use Pulumi’s test framework to validate policy behavior:

import * as assert from "assert";
import { validateResource } from "@pulumi/policy";

describe("S3 Encryption Policy", () => {
    it("reports violation for unencrypted bucket", () => {
        const violations: string[] = [];
        const reportViolation = (msg: string) => violations.push(msg);
        
        validateResource(
            s3EncryptionPolicy,
            { /* mock bucket props */ },
            reportViolation
        );
        
        assert(violations.length > 0, "Expected violation for unencrypted bucket");
    });
});

Version control your policies. Store policy packs in a dedicated repository, use semantic versioning, and review policy changes through pull requests just like infrastructure code.

Advanced: Custom Policy SDKs

For organizations with complex requirements, consider building a custom policy SDK that encapsulates your organization’s standards. This reduces duplication and ensures consistency:

// shared-policies/sdk.ts
export interface PolicyConfig {
    name: string;
    description: string;
    severity: "low" | "medium" | "high" | "critical";
}

export function createResourcePolicy(
    config: PolicyConfig,
    validator: (props: any, reportViolation: (msg: string) => void) => void
): pulumi.policy.Policy {
    return {
        name: config.name,
        description: config.description,
        enforcementLevel: config.severity === "critical" ? "mandatory" : "advisory",
        validateResource: (args, reportViolation) => {
            validator(args.props, reportViolation);
        },
    };
}

Conclusion

Pulumi Policy Packs combined with Claude Code create a powerful governance workflow. By automating policy creation, enforcing checks in CI/CD, and following best practices for policy development, you can ensure your infrastructure remains secure, compliant, and well-managed without slowing down development teams.

Start small—implement a few critical policies—and expand gradually. The key is balancing enforcement with developer experience, providing clear guidance when policies are violated so teams can self-correct efficiently.

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